Spare tire anti-theft device



FIG. 1 is a left side elevational view of a spare tire anti-theft device showing our new design, the broken-line disclosure of a portion of a key being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a spare tire anti-theft device, as shown and described. 